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Proceedings Paper

Tunable Fabry-Perot etalons for the 120- to 150-nm wavelength range
Author(s): Jean-Pierre Wuelser; William J. Rosenberg; Marilyn E. Bruner
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Paper Abstract

Tunable UV Fabry-Perot etalons have the potential of providing images, dopplergrams, and density maps of the Sun's upper chromosphere and transition region. To study the feasibility of this approach, we developed and built tunable laboratory etalons for the 135 - 141 and 120 - 123 nm wavelength ranges. At 140 nm we achieved a finesse of 10.5 and a peak transmission of 3 percent. This performance is sufficient to observe the density sensitive line pair of O IV at 140.4 and 140.7 nm. At 122 nm (H Lyman alpha) we achieved a finesse of 3.8 and a peak transmission of 0.07 percent.

Paper Details

Date Published: 18 December 2000
PDF: 12 pages
Proc. SPIE 4139, Instrumentation for UV/EUV Astronomy and Solar Missions, (18 December 2000); doi: 10.1117/12.410537
Show Author Affiliations
Jean-Pierre Wuelser, Lockheed Martin Solar and Astrophysics Lab. (United States)
William J. Rosenberg, Lockheed Martin Solar and Astrophysics Lab. (United States)
Marilyn E. Bruner, Lockheed Martin Solar and Astrophysics Lab. (United States)


Published in SPIE Proceedings Vol. 4139:
Instrumentation for UV/EUV Astronomy and Solar Missions
Silvano Fineschi; Clarence M. Korendyke; Oswald H. W. Siegmund; Bruce E. Woodgate, Editor(s)

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